{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA2140-5MN32-0AJ0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA2140-5MN32-0AJ0","canonicalUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0AJ0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA2140-5MN32-0AJ0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA series, molded case circuit breaker, 3VA2140-5MN32-0AJ0, 40 A rated, 3-pole, 187 kA at 240 V, motor protection design.","salesMarkdown":"## What this MCCB does for a motor circuit The Siemens SENTRON 3VA2140-5MN32-0AJ0 is a 3-pole molded case circuit breaker (MCCB) rated for 40 A continuous current across the full ambient range from 40 °C to 70 °C — no derating needed up to the 70 °C ceiling. Its interrupting capacity sits at 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V, which covers most low-voltage distribution and motor branch circuits you'll encounter in an industrial panel. ## Motor protection and phase loss coverage This breaker is explicitly designed for motor protection, with built-in phase failure detection — meaning it will trip on a lost phase before the motor overheats from single-phasing. The trip indicator confirms the breaker opened on a fault, not a manual disconnect. The 1.6 W maximum power loss is low enough that internal enclosure heating is negligible for most cabinet sizes. ## Environmental tolerance That covers unheated warehouses and outdoor-rated enclosures in most climates.","metaTitle":"Siemens 3VA2140-5MN32-0AJ0 SENTRON MCCB, 40A, 3-Pole, 187kA","metaDescription":"Siemens SENTRON 3VA2140-5MN32-0AJ0 molded case circuit breaker, 40A continuous, 3-pole, 187 kA at 240 V. Motor protection design with phase failure detection. Active production. So","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"86 mm","Width":"105 mm","title":"3VA2140-5MN32-0AJ0","Height":"181 mm","Maximum":"17 s","Minimum":"4 s","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"121 kA","at 500 V":"75.6 kA","at 690 V":"3.7 kA","at 40 °C":"40 A","at 45 °C":"40 A","at 50 °C":"40 A","at 55 °C":"40 A","at 60 °C":"40 A","at 65 °C":"40 A","at 70 °C":"40 A","Depth [In]":"3.39 in","Width [In]":"4.13 in","Height [In]":"7.13 in","description":"circuit breaker 3VA2 IEC frame 160 breaking capacity class M Icu=55kA @ 415V 3-pole, motor protection ETU350M, LSI, In=40A overload protection Ir=16A...40A short-circuit protection Isd=3...15 x Ir, Ii=15 x In nut keeper kit 2 auxiliary switches HP 1 trip alarm switch HP","Trip Indicator":"Yes","Number Of Poles":"3","Voltage Trigger":"No","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"Molded case circuit breaker","Undervoltage Release":"No","Design Of The Product":"Motor protection","Communication Function":"No","Phase Failure Detection":"Yes","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","power loss [W] / maximum":"1.6 W","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Of The Supplied Basic Switch":"3VA21405MN320AA0","Design Of The Auxiliary Switch":"2 auxiliary switches + 1 trip alarm switch HP","Ground-Fault Monitoring Version":"Without","Continuous Current / Rated Value":"40 A","Insulation Voltage / Rated Value":"800 V","adjustable trip class (Tc CLASS)":"10A, 10E, 20E","Design Of The Overcurrent Release":"ETU350M","protection class IP / on the front":"IP40","operating power / at AC-3 / at 230 V":"11 000 W","operating power / at AC-3 / at 400 V":"18 500 W","Product Function / Grounding Protection":"No","operating voltage / at AC / rated value":"690 V","reference code / according to IEC 81346-2":"Q","Continuous Current / Rated Value / Maximum":"160 A","Product Extension / Optional / Motor Drive":"Yes","Protection Function Of The Overcurrent Release":"LSI","number of CO contacts / for auxiliary contacts":"3","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB11","Switching Capacity Class Of The Circuit Breaker":"E","Mechanical Service Life (Operating Cycles) / Typical":"25 000","Type Of Electrical Connection / For Main Current Circuit":"on both sides nut keeper kit","Arrangement Of Electrical Connectors / For Main Current Circuit":"Front terminal"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cda978e31ec81fb539d5632cb59bd0b3.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=569650&mlfb=3VA2140-5MN32-0AJ0"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 3VA2140-5MN32-0AJ0?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm number."},{"question":"What is 3VA2140-5MN32-0AJ0's interrupting capacity at 415 V?","answer":"The interrupting capacity at 415 V is 121 kA, matching the 440 V rating. At 500 V it drops to 75.6 kA, and at 690 V to 3.7 kA."},{"question":"Will 3VA2140-5MN32-0AJ0 drop into a panel that was specified around 3VA2163-5HL32-0DB0 without rewiring?","answer":"Both are 3-pole SENTRON 3VA MCCBs sharing the same 105 mm width, 181 mm height, and 86 mm depth footprint, so the mechanical fit is identical. The electrical difference is in the trip curve and interrupting rating — verify the 3VA2163-5HL32-0DB0's trip characteristics match your coordination study before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA2140-5MN32-0AJ0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA2140-5MN32-0AJ0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}